CA2044171A1 - Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same - Google Patents

Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same

Info

Publication number
CA2044171A1
CA2044171A1 CA2044171A CA2044171A CA2044171A1 CA 2044171 A1 CA2044171 A1 CA 2044171A1 CA 2044171 A CA2044171 A CA 2044171A CA 2044171 A CA2044171 A CA 2044171A CA 2044171 A1 CA2044171 A1 CA 2044171A1
Authority
CA
Canada
Prior art keywords
phase
corrosion
producing
rare earth
same
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2044171A
Other languages
French (fr)
Other versions
CA2044171C (en
Inventor
Yukiko Ozaki
Michio Shimotomai
Yasutaka Fukuda
Akira Fujita
Yoko Kitano
Junichi Shimomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Yukiko Ozaki
Michio Shimotomai
Yasutaka Fukuda
Akira Fujita
Yoko Kitano
Junichi Shimomura
Kawasaki Steel Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yukiko Ozaki, Michio Shimotomai, Yasutaka Fukuda, Akira Fujita, Yoko Kitano, Junichi Shimomura, Kawasaki Steel Corporation filed Critical Yukiko Ozaki
Publication of CA2044171A1 publication Critical patent/CA2044171A1/en
Application granted granted Critical
Publication of CA2044171C publication Critical patent/CA2044171C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

This invention provides permanent magnets being considerably excellent in not only magnetic properties but also corrosion resistance by using magnetically useful two phases, i.e. RE2TM14B phase having a high residual magnetic flux density and a low melting point RE-TM phase or RE-TM-B phase enhancing the sinterability and possessing a cleaning action against grain boundary of main phase and further forming an electrochemically noble composition as a starting material to prepare a two phase magnet.
CA002044171A 1989-10-12 1990-10-11 Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same Expired - Fee Related CA2044171C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP263,946/89 1989-10-12
JP26394689 1989-10-12
JP335,028/89 1989-12-26
JP33502889 1989-12-26
JP2269635A JP2675430B2 (en) 1989-10-12 1990-10-09 Corrosion resistant rare earth-transition metal magnet and method of manufacturing the same
JP269,635/90 1990-10-09
PCT/JP1990/001315 WO1991006107A1 (en) 1989-10-12 1990-10-11 Corrosion-resistant, rare earth-transition metal magnet and method of production thereof

Publications (2)

Publication Number Publication Date
CA2044171A1 true CA2044171A1 (en) 1991-04-13
CA2044171C CA2044171C (en) 2000-12-12

Family

ID=27335262

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002044171A Expired - Fee Related CA2044171C (en) 1989-10-12 1990-10-11 Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same

Country Status (6)

Country Link
EP (1) EP0447567B1 (en)
JP (1) JP2675430B2 (en)
KR (1) KR960013029B1 (en)
CA (1) CA2044171C (en)
DE (1) DE69027201T2 (en)
WO (1) WO1991006107A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405455A (en) * 1991-06-04 1995-04-11 Shin-Etsu Chemical Co. Ltd. Rare earth-based permanent magnet
DE69202515T2 (en) * 1991-06-04 1995-09-21 Shinetsu Chemical Co Process for the production of two-phase permanent magnets based on rare earths.
JP2782024B2 (en) * 1992-01-29 1998-07-30 住友特殊金属株式会社 Method for producing raw material powder for R-Fe-B-based permanent magnet
US5387291A (en) * 1992-03-19 1995-02-07 Sumitomo Special Metals Co., Ltd. Process for producing alloy powder material for R-Fe-B permanent magnets and alloy powder for adjusting the composition therefor
EP0583041B1 (en) * 1992-08-13 1997-02-05 Koninklijke Philips Electronics N.V. Method of manufacturing a permanent magnet on the basis of NdFeB
CN1044940C (en) * 1992-08-13 1999-09-01 Ybm麦格奈克斯公司 Method of manufacturing a permanent magnet on the basis of ndfeb
US5482575A (en) * 1992-12-08 1996-01-09 Ugimag Sa Fe-Re-B type magnetic powder, sintered magnets and preparation method thereof
JPWO2005123974A1 (en) 2004-06-22 2008-04-10 信越化学工業株式会社 R-Fe-B rare earth permanent magnet material

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261579B1 (en) * 1986-09-16 1993-01-07 Tokin Corporation A method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder
JP2700643B2 (en) * 1987-04-11 1998-01-21 株式会社トーキン Manufacturing method of rare earth permanent magnet with excellent oxidation resistance
JPH0621324B2 (en) * 1986-10-04 1994-03-23 信越化学工業株式会社 Rare earth permanent magnet alloy composition
JPS63127505A (en) * 1986-11-17 1988-05-31 Taiyo Yuden Co Ltd Magnet and manufacture thereof
JPH063763B2 (en) * 1986-12-26 1994-01-12 信越化学工業株式会社 Rare earth permanent magnet manufacturing method
JP2948223B2 (en) * 1987-03-31 1999-09-13 住友特殊金属 株式会社 High performance permanent magnet with excellent corrosion resistance and method of manufacturing the same
US5015307A (en) * 1987-10-08 1991-05-14 Kawasaki Steel Corporation Corrosion resistant rare earth metal magnet

Also Published As

Publication number Publication date
JPH03250607A (en) 1991-11-08
KR920701999A (en) 1992-08-12
DE69027201T2 (en) 1996-10-10
WO1991006107A1 (en) 1991-05-02
CA2044171C (en) 2000-12-12
EP0447567A4 (en) 1992-05-20
EP0447567B1 (en) 1996-05-29
DE69027201D1 (en) 1996-07-04
JP2675430B2 (en) 1997-11-12
EP0447567A1 (en) 1991-09-25
KR960013029B1 (en) 1996-09-25

Similar Documents

Publication Publication Date Title
MY125006A (en) Permanent magnet including multiple ferromagnetic phases and method for producing the magnet
JPS54124822A (en) Permanent magnet material
CA2044171A1 (en) Corrosion-resistant rare earth metal-transition metal series magnets and method of producing the same
ES8707373A1 (en) Method of producing a permanent magnet having high and low coercivity regions.
US4544904A (en) Composite magnet and magnetic circuit
EP0571002A3 (en) Permanent magnet alloy having improved resistance to oxidation and process for production thereof
EP1189245A3 (en) Magnetic alloy powder for permanent magnet and method for producing the same
Homma Permanent Magnets and Intermetallic Compounds
Wijn Magnetic Properties of Metals. Vol. i 2. Magnetic Alloys for Technical Applications. Hard Magnetic Alloys
DE3462964D1 (en) Samarium-cobalt magnet alloy
CA2034632A1 (en) Hot worked rare earth-iron-carbon magnets
RU93050138A (en) ALLOYS FOR PERMANENT MAGNETS BASED ON RARE-EARTH ELEMENTS, IRON AND BORON
Wu et al. Rare Earth--Cobalt Permanent Magnet of the Type Nd sub x Sm sub 0. 5--x Ce sub 0. 5(Co sub 0. 824 Cu sub 0. 118 Mn sub 0. 059) sub 6. 8.(Retroactive Coverage)
Ghandehari Rare Earth--Iron--Boron Permanent Magnets Production
Kojima New High-Quality Permanent Magnet for Rotor--Anisotropic Manganese--Aluminum Magnet
JPS6442805A (en) Rare earth permanent magnet with high corrosion resistance
Ohashi et al. A Rare Earth(--Iron) Based Alloy for Permanent Magnet
Ahmad et al. Electronic and Magnetic Materials, Their Production, Microstructures and Applications
van Mens et al. Magnetic and Corrosion Properties of Mechanical Alloyed Nd sub 2 Fe sub 14 B With a Rare Earth Hydride
Martin et al. Squareness Ratio for Various Rare Earth Permanent Magnets.(Retroactive Coverage)
Herget Current Patent Situation in the Field of the New Permanent Magnet Material NdFeB.(Retroactive Coverage)
Cadieu Optimization of film synthesized rare earth transition metal permanent magnet systems. Progress report, August 1, 1990-March 1991
JPS5515226A (en) Permanent magnet material
JPS556431A (en) Permanent magnet alloy
Stadelmaier et al. Understanding Rare Earth Permanent Magnet Alloys: Crystal Chemistry and Problems Inherent in Phase Constitution.(Retroactive Coverage)

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed